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Comtech EF Data CDM-700 User Manual

Page 158

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CDM-700 High Speed Satellite Modem

Revision 5

Remote Control

MN/CDM700.IOM

11–8

Parameter

Type

Command

(Instruction

Code and

Qualifier)

Arguments

for Command

or Response

to Query

Description of Arguments

Response to

Command

Query

(Instruction

Code and

Qualifier)

Response to Query

Tx Frequency

TFQ=

9 bytes

Command or Query.
Tx Frequency:
- IF: 52-88 MHz and 104-176 MHz.
- L-Band: 950-1950 MHz.
Resolution=100Hz.

Example: TFQ=0140.9872

TFQ=
TFQ?
TFQ*
TFQ#

TFQ? TFQ=xxxx.xxxx

(see description of
arguments)

Tx FEC Type

N/A

1 byte

Query only.
Tx FEC coding type, where:
0=Turbo

Example: TFT=0 (which is Turbo coding)

N/A

TFT?

TFT=x
(see description of
arguments)

Tx
Modulation
Type

TMD=

1 byte

Command or Query.
Tx Modulation type, where:
0=QPSK
1=8PSK
2=16QAM
3=Reserved
4=64QAM

Depending on FEC type, not all of these selections will be valid.

Example: TMD=1 (which is 8PSK)

TMD=
TMD?
TMD*
TMD#

TMD?

TMD=x
(see description of
arguments)

Tx FEC Code
Rate

TCR=

1 byte

Command or Query.
Tx Modulation Type, where:
0 = Rate 3/4
1 = Rate 7/8

Depending on FEC type, not all of these selections will be valid.

Example: TCR=0 (which is Rate 3/4)

TCR=
TCR?
TCR*
TCR#

TCR?

TCR=x
(see description of
arguments)

Tx Data Rate

N/A

10 bytes

Query only.
Composite Tx Data rate, in Mbps.

Resolution=1 bps.

Example: TDR=002.047999 (which is 2.047999 Mbps)

N/A TDR? TDR=xxx.xxxxxx

(see description of
arguments)